Perhaps you should try some spelling variations:
sin dauer » seine dauer, die dauer, i dauer
dauer api » dauer als, dauer iii
api usage » a usage, iii usage
usage de » usage des, usages de, l'usage de
yang jun » yang jui, pang jun, yang jin
yang yi » yang jui
yang xi » yang jui
de mr » de mer, de gr, de ma
dong » doing, long, done

You may be able to get more results by adjusting your search query.

• The words AND, OR and NOT may confuse the search; try adding quotes: "dong sin dauer api usage de mr ((((yang jun) OR (yang yi))) OR (((yang di) OR (yang xi)))) ;~".
• Adding a wildcard symbol may retrieve word variants: dong sin dauer api usage de mr ((((yang jun) OR (yang yi))) OR (((yang di) OR (yang xi)))) ;*.